EP 2737171 A2 20140604 - METHODS AND APPARATUS HAVING BOREHOLE SEISMIC WAVEFORM COMPRESSION
Title (en)
METHODS AND APPARATUS HAVING BOREHOLE SEISMIC WAVEFORM COMPRESSION
Title (de)
VERFAHREN UND VORRICHTUNG MIT SEISMISCHER BOHRLOCHWELLENFORMKOMPRIMIERUNG
Title (fr)
PROCÉDÉS ET APPAREIL AYANT UNE COMPRESSION DE FORME D'ONDE SISMIQUE DE TROU DE FORAGE
Publication
Application
Priority
- US 201161543616 P 20111005
- US 2012058330 W 20121001
Abstract (en)
[origin: WO2013052423A2] An illustrative seismic while drilling system includes a drill string having at least one seismic sensor that can be employed to detect seismic signals during pauses in the drilling process, e.g., when extending the length of the drill string. An embedded processor digitizes a signal from the seismic sensor to obtain a digital waveform and processes the digital waveform to derive a compressed waveform representation for storage or transmission. Compression is provided by adaptively reducing the sampling rate and quantization resolution subject to one or more quality constraints including, e.g., error in first break timing, error in first break sign, mean square error, and bit count. Reasonably good representations of the received acoustic waveforms can be achieve with less than 200 bits.
IPC 8 full level
G01V 11/00 (2006.01); E21B 47/12 (2012.01); G01V 1/48 (2006.01); H03M 7/30 (2006.01)
CPC (source: EP US)
E21B 47/16 (2013.01 - US); G01V 1/48 (2013.01 - EP US); G01V 11/002 (2013.01 - EP US); H03M 7/3059 (2013.01 - EP US); G01V 2200/16 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2013052423 A2 20130411; WO 2013052423 A3 20140508; AU 2012318822 A1 20140410; AU 2016202309 A1 20160505; AU 2016202309 B2 20170713; BR 112014004802 A2 20170328; CA 2846968 A1 20130411; CA 2846968 C 20160823; CA 2934158 A1 20130411; CA 2934158 C 20180821; CN 103988096 A 20140813; CN 103988096 B 20180209; EP 2737171 A2 20140604; EP 2737171 A4 20150610; MY 174342 A 20200409; RU 2014110956 A 20151110; RU 2570699 C2 20151210; US 2014362664 A1 20141211; US 9657564 B2 20170523
DOCDB simple family (application)
US 2012058330 W 20121001; AU 2012318822 A 20121001; AU 2016202309 A 20160413; BR 112014004802 A 20121001; CA 2846968 A 20121001; CA 2934158 A 20121001; CN 201280044863 A 20121001; EP 12837903 A 20121001; MY PI2014000737 A 20121001; RU 2014110956 A 20121001; US 201214349744 A 20121001